Measuring device



Oct. 22, 1935. o. A. MONAMEE MEASURING DEVICE Filed June 25, 1932 3 Sheets-Sheet l Men/507:

ou. 2.2,A 1935. o. A. MCNAMEE 2,018217 'MEASURING D EWI'CE Filed June 25, 1932 3 Sheets-Sheet 2 Egg OWEN f4. /V-f/VQMEE,

Oct. 22, 1935. o. A. MQNAMEE 2,018,217

MEASURING DEVICE Filed June 25, 1932 3 Sheets-Sheet 3 K4 I l u /4 Inventor:

@WE/V 4. MFA/@M55 Patented Oct. 22, 1935 PATEN'I OFFICE 2,018,211 mamme DEvIo I Owen A. McNamee, Worcester, i Application June es, 1932, semi 619,311

This invention isian apparatus for measuring material extruded from a press and, specifically, from a-press operated by a hydraulic rain.V VIt is particularly intended for use with a press constructed to extrude solid lead in the form of a cable covering. Such a press does not function properly until the application of full working pressure and one of the objects of the present invention is to provide a measuring device winch -does not begin to function until working conditions are established. Other objects will be understood from the following disclosure.

Having reference to the accompanying drawings, which illustrate a specific form of this invention: ,s

Figure lis a front elevation of a press incorporating this invention.

'a press extruding a lead covering directly on' a cable.

In detail, the press to which this invention is applied consists of a stationarily mounted plunger. i tting in a heavy cylinder 2 which is lled with lead for extrusion through an orifice 3 in the form of a cable covering, these latter parts being moved.

upwardly against the fixed plunger by a hydraulic ram 4i. The movable parts of this press carry a rack d which is engaged by a pinion t fixed to a shaft i projecting from the casing of an indicator 8.

inside of the casing of the indicator 3 is a spring engaged friction gearing 9 which connects the in- `ner end of the shaft 'i to a pointer iti. This pointer is arranged so as to be visible and converts the travelling distance of the ram 6 into extruded.

material poundage measure, this pointer operating on a scale I I graduated into tenths of a pound. The ratio of the friction gearing 9 may be varied by means of a screw I2 so that varyingly sized presses may be accommodated. The gearing may be disengaged against its spring pressure by means of an electromagnet` I3 whose pivoted armature is in connect on therewith.

This indicator vmay made to 4measure any poundage of extruded material by -the inclusion of one or more subsidiary dials I4 which progressively sum up the number of rotations of the pointer i0 and which may be constructed in any one of a number of well known ways.- These dials are shown calibrated in powers of ten. Each C Claims. (Cl. :i3- 125) of these indicating elements may be manually reset by'means of knobs I5 which project through the exterior of the casing and are connected through small belts or chains I6. The dials M are progressively operated by a finger 9 moved by the 5 pointer I0 and engaging pins on left-hand dial, this dial in turn carrying a finger Il'l engaging pins on the other dial.

When the press is rst started the ram l will move upwardly a considerable distance, in coml0 pressing the lead in the cylinder 2 to a more comct structure, before working conditions 'are properly established. Itis, of course, not desirable to have the indicator operate during this period and means are therefore supplied for energizing 15 .the electromagnet i3 which will declutch the indicator from operative engagement with the press.

This means may consist of a Bourdon gage I1 which is arranged in fluid connection, through 20 piping it, with the ram d'. The dial operating hydrostatictube it in this .gage also operates a pair of contacts 2t and 2i which are arranged in electrical circuit with the electromagnet. This connection and the operating mechanism of the 2@ ram ri are not shown because their structure and general detailsl are so well known that their inclusion would needlessly complicate the issue.

The contact 2i is made so that it can be adjusted by a screw 22 and is set so that contact be- 30 tween these points is maintained until the hydrostatic pressure in the pipe i t, and of course in the ram t, has attained a pressure which -insures proper extrusion of lead from the press. Normally, inv a press of the character illustrated this 35 pressure will be approximately 400 tons. When these contacts break the circuit to the electromagnet i3 the spring-operated clutch Q will automaticaily place the indicator 8 in operative engagement with the ram t, through gearing already described, so that 4the indicator at once begins to function. Another type with which the invention may be used is shown by Figure 5. In this form the lead is extruded directly onto a cable. It is generally similar to the press already described except that the male die 23 is bored to receive the cable 2l so that the female die 25 can mold the lead directly thereon. This type df press is familiar to all and need not be further described. It might be pointed out that in this instance `it is extremely. important that the lead be uniformly' extruded because otherwise the product will not be commer-'- cially marketable.

mined pressure is attained.

e Although a specific form of this measuring device has been shown and described in accordance with the patent statutes, it is not -intended to limit the scope of the invention exactly thereto, except as defined by the following claims.

` I claim:

1. An apparatus for measuring material extruded from a press operated by a ram, including means for measuring the travelling distance of said ram, means including a clutch for gearing said measuring means to said ram and means operable when said ram, applies a predetermined f orce to said press for operating said' clutch.

2. An apparatus for ymeasuring material extruded from a press operated by ahydraulic ram,

including means for measuring the travelling distance of said ram, means including a clutch for gearing said measuring means to said ram and means operable by the fluid pressure of said hydraulic ram for operating said clutch.

3. An'apparatus for measuring material extruded from a press operated by a hydraulic ram, comprising means for measuring the travelling distance of said ram, means including an electromagnetically operated clutch for gearing said measuring means to said ram, current conducting eans for energizing the electromagnet operating said clutch, a switch interposed in said last named means and hydrostatically operated means arranged in uid connection'with said hydraulic ram for operating said switch when a predeter- 4. An apparatus for measuring material extruded from a press operated by a hydraulic ram, comprising an indicator constructed and arranged to read in extruded material poundage measure as estimated from the measure of said rams travelling distance, means including an electromagneticallyoperated clutch for gearing said indicator to said ram, means for varying the said means gear ratio to compensate for varyingly sized presses, currentxconducting means for energizing the electromagnet operating said clutch. a Bourl0 don gage in connectionwith said hydraulic rams working uid, and a switch operated by the tube `movement of said gage and interposed in said means with said ram.

s. The combination of a chamber havmgan x outlet', a displacement member for extruding ma- .terial in said chamber through said outlet upon relative movement of said chamber and said 2.5 member, means for applying force to cause said relative movement, means for measuring said lrelative movement and means responsive to the degree of force applied by the rst named means for controlling operationl of the secondnamed3 means.

OWEN A. MCNAIWEE. 

